from tkinter import*

coords = [0,0, 10,0, 10,10, 20,10, 20,30, 10,30, 10,20, 0,20]

print('Введите начальную координату X:')
X = int(input())
print('Введите начальную координату Y:')
Y = int(input())
print('Введите коэфицент увеличения N:')
N = int(input())
if N == 0 and X>=0 and X<=500 and Y>=0 and  Y<=500:
    pass
else:
    if N > 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 30*N+Y<=500:
        pass
    else:
        if N < 0 and 20*N+X>=0 and 30*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
            pass
        else:
            print('Ошибка, введены неправильные координаты или коэфицент')
            exit()

root = Tk()
root.geometry('500x500')
root.title('ИТ марафон')

canvas = Canvas(bg="white", height=500, width=500)
canvas.pack(anchor=CENTER, expand=1)

canvas.create_polygon(coords[0] *N+X, coords[1] *N+Y,
                      coords[2] *N+X, coords[3] *N+Y,
                      coords[4] *N+X, coords[5] *N+Y,
                      coords[6] *N+X, coords[7] *N+Y,
                      coords[8] *N+X, coords[9] *N+Y,
                      coords[10]*N+X, coords[11]*N+Y,
                      coords[12]*N+X, coords[13]*N+Y,
                      coords[14]*N+X, coords[15]*N+Y)
                      
root.mainloop()
